In a complete binary tree, what is the relationship between the number of nodes

Practice Questions

Q1
In a complete binary tree, what is the relationship between the number of nodes and the height?
  1. Height = log(n)
  2. Height = n
  3. Height = n/2
  4. Height = n^2

Questions & Step-by-Step Solutions

In a complete binary tree, what is the relationship between the number of nodes and the height?
  • Step 1: Understand what a complete binary tree is. A complete binary tree is a type of tree where every level, except possibly the last, is fully filled, and all nodes are as far left as possible.
  • Step 2: Know that the height of a tree is the number of edges on the longest path from the root to a leaf node.
  • Step 3: Realize that in a complete binary tree, the number of nodes (n) and the height (h) are related. The height increases as you add more nodes.
  • Step 4: Learn that the maximum number of nodes in a complete binary tree of height h is 2^(h+1) - 1. This means that as the height increases, the number of nodes grows exponentially.
  • Step 5: Understand that if you have n nodes, you can find the height by using the formula h = log2(n + 1) - 1. This means the height is approximately log(n) when n is large.
  • Step 6: Conclude that in a complete binary tree, the height is approximately log(n), where n is the number of nodes.
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